Constrained Local UniversE Simulations: A Local Group Factory

Understand

Near field cosmology is practiced by studying the Local Group (LG) and its neighbourhood.

• The present paper describes a framework for simulating the near field on the computer.
• Assuming the LCDM model as a prior and applying the Bayesian tools of the Wiener filter (WF) and constrained realizations of Gaussian fields to the Cosmicflows-2 (CF2) survey of peculiar velocities, constrained simulations of our cosmic environment are performed.
• The aim of these simulations is to reproduce the LG and its local environment.